Results 21 to 30 of about 7,369,874 (310)

Subharmonicity properties of the Bergman kernel and some other functions associated to pseudoconvex domains [PDF]

open access: yes, 2005
Let $D$ be a pseudoconvex domain in $\C^k_t\times\Cn_z$ and let $\phi$ be a plurisubharmonic function in $D$. For each $t$ we consider the $n$-dimensional slice of $D$, $D_t=\{z; (t,z)\in D\}$, let $\phi^t$ be the restriction of $\phi$ to $D_t$ and ...
Berndtsson, Bo
core   +2 more sources

The Univalent Function Created by the Meromorphic Functions Where Defined on the Period Lattice

open access: yesCommunications in Advanced Mathematical Sciences, 2019
The function $ \xi(z)$ is obtained from the logarithmic derivative function  $\sigma(z)$. The elliptic function $ \wp(z) $ is also derived from the $ \xi(z) $ function.
Hasan Sahin, İsmet Yıldız
doaj   +1 more source

Measuring the Cosmological Geometry from the Lyman Alpha Forest along Parallel Lines of Sight [PDF]

open access: yes, 1998
We discuss the feasibility of measuring the cosmological metric using the redshift space correlation function of the Lya forest in multiple lines of sight, as a function of angular and velocity separation. The geometric parameter that is measured is f(z)
Ballinger W. E.   +7 more
core   +2 more sources

A characterization of pseudocompactness

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1981
It is proved here that a completely regular Hausdorff space X is pseudocompact if and only if for any continuous function f from X to a pseudocompact space (or a compact space) Y, f*ϕ is z-ultrafilter whenever ϕ is a z-ultrafilter on X.
Prabduh Ram Misra, Vinodkumar
doaj   +1 more source

SOME RESULTS ON JACK’S LEMMA FOR ANALYTIC FUNCTIONS

open access: yesJournal of Amasya University the Institute of Sciences and Technology, 2022
In this paper, an upper bound will be found for the second coefficient in the Taylor expansion of the analytical function $p(z)$ using the Jack lemma. Also, the modulus of the angular derivative of the $I_{f}(z)=\frac{zp^{\prime }(z)}{p(z)}$ function on ...
Bülent Nafi Örnek
doaj   +1 more source

A Matrix Integral Solution to [P,Q]=P and Matrix Laplace Transforms [PDF]

open access: yes, 1996
In this paper we solve the following problems: (i) find two differential operators P and Q satisfying [P,Q]=P, where P flows according to the KP hierarchy \partial P/\partial t_n = [(P^{n/p})_+,P], with p := \ord P\ge 2; (ii) find a matrix integral ...
A. Morozov   +32 more
core   +3 more sources

Hardy’s function Z(t): Results and problems [PDF]

open access: yesProceedings of the Steklov Institute of Mathematics, 2017
15 pages.
openaire   +3 more sources

Connection between Distribution and Fragmentation Functions [PDF]

open access: yes, 2000
We show that the quark fragmentation function $D(z)$ and the quark distribution function $q(x)$ are connected in the $z \to 1$ limit by the approximate relation $D(z)/z \simeq q(2-1/z)$, where both quantities are in their physical regions.
Barone, Vincenzo   +2 more
core   +2 more sources

Sufficient conditions for starlikeness associated with parabolic region

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
An analytic function f(z)=z+a n+1 z n+1+⋯, defined on the unit disk △={z:|z||w−1|. This class is closely related to the class of uniformly convex functions. Sufficient conditions for function to be in S p are obtained. In particular,
V. Ravichandran   +2 more
doaj   +1 more source

On the order of indeterminate moment problems [PDF]

open access: yes, 2013
For an indeterminate moment problem we denote the orthonormal polynomials by P_n. We study the relation between the growth of the function P(z)=(\sum_{n=0}^\infty|P_n(z)|^2)^{1/2} and summability properties of the sequence (P_n(z)).
Berg, Christian, Szwarc, Ryszard
core   +2 more sources

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